The anxiogenic action of Ro 15-1788 is reversed by chronic, but not by acute, treatment with chlordiazepoxide.

The benzodiazepine receptor antagonist, Ro 15-1788 (10 mg/kg) is anxiogenic in the social interaction test. Acute administration of chlordiazepoxide (5 or 10 mg/kg) did not reverse the anxiogenic effects of Ro 15-1788; however, in animals pretreated with chlordiazepoxide (5 mg/kg) for 5 days prior to testing, there was a reduction in the anxiety produced by Ro 15-1788.